1 /*
2 * Copyright (c) 2015, 2019, Red Hat, Inc. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "gc/shared/collectorCounters.hpp"
27 #include "gc/shared/generationCounters.hpp"
28 #include "gc/shared/hSpaceCounters.hpp"
29 #include "gc/shenandoah/shenandoahMonitoringSupport.hpp"
30 #include "gc/shenandoah/shenandoahHeap.inline.hpp"
31 #include "gc/shenandoah/shenandoahHeapRegionCounters.hpp"
32 #include "memory/metaspaceCounters.hpp"
33 #include "services/memoryService.hpp"
34
35 class ShenandoahYoungGenerationCounters : public GenerationCounters {
36 public:
37 ShenandoahYoungGenerationCounters() :
38 GenerationCounters("Young", 0, 0, 0, (size_t)0, (size_t)0) {};
39
40 virtual void update_all() {
41 // no update
42 }
43 };
44
45 class ShenandoahGenerationCounters : public GenerationCounters {
46 private:
47 ShenandoahHeap* _heap;
48 public:
49 ShenandoahGenerationCounters(ShenandoahHeap* heap) :
50 GenerationCounters("Heap", 1, 1, heap->initial_capacity(), heap->max_capacity(), heap->capacity()),
51 _heap(heap)
52 {};
53
54 virtual void update_all() {
55 _current_size->set_value(_heap->capacity());
56 }
57 };
58
59 ShenandoahMonitoringSupport::ShenandoahMonitoringSupport(ShenandoahHeap* heap) :
60 _partial_counters(nullptr),
61 _full_counters(nullptr)
62 {
63 // Collection counters do not fit Shenandoah very well.
64 // We record partial cycles as "young", and full cycles (including full STW GC) as "old".
65 _partial_counters = new CollectorCounters("Shenandoah partial", 0);
66 _full_counters = new CollectorCounters("Shenandoah full", 1);
67
68 // We report young gen as unused.
69 _young_counters = new ShenandoahYoungGenerationCounters();
70 _heap_counters = new ShenandoahGenerationCounters(heap);
71 _space_counters = new HSpaceCounters(_heap_counters->name_space(), "Heap", 0, heap->max_capacity(), heap->initial_capacity());
72
73 _heap_region_counters = new ShenandoahHeapRegionCounters();
74 }
75
76 CollectorCounters* ShenandoahMonitoringSupport::stw_collection_counters() {
77 return _full_counters;
78 }
79
80 CollectorCounters* ShenandoahMonitoringSupport::full_stw_collection_counters() {
81 return _full_counters;
82 }
83
84 CollectorCounters* ShenandoahMonitoringSupport::concurrent_collection_counters() {
85 return _full_counters;
86 }
87
88 CollectorCounters* ShenandoahMonitoringSupport::partial_collection_counters() {
89 return _partial_counters;
90 }
91
92 void ShenandoahMonitoringSupport::update_counters() {
93 MemoryService::track_memory_usage();
94
95 if (UsePerfData) {
96 ShenandoahHeap* heap = ShenandoahHeap::heap();
97 size_t used = heap->used();
98 size_t capacity = heap->max_capacity();
99 _heap_counters->update_all();
100 _space_counters->update_all(capacity, used);
101 _heap_region_counters->update();
102
103 MetaspaceCounters::update_performance_counters();
104 }
105 }